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Collection: High mountain glaciers and climate change

High mountain glaciers and climate change
High mountain glaciers and climate change
Challenges to human livelihoods and adaptation Climate change is causing signifcant mass loss of glaciers in high mountains worldwide. Although glacier systems show a great amount of inherent complexity and variation, there are clear overall trends indicating global glacier recession, which is likely to accelerate in coming decades. Large gaps ...
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Glacier Lake Outburst Floods
Cumulative frequency graph of GLOFs in Nepal, Bhutan and Tibet. The best-ft line suggests an increase in GLOF frequency through time, although older events may be under-reported. GLOFs also took place in Patagonia,...
06 Dec 2010 - by Riccardo Pravettoni
Glacier volume change forecasts
Oerlemans et al. (1998) conducted modelling experiments for a sample of 12 glaciers and ice caps, to determine volume changes under a range of temperature and precipitation forcings (Fig. 3). The range of glacier respon...
06 Dec 2010 - by Riccardo Pravettoni
Southern Asia natural disasters between 1975 and 2004
Overview of natural disasters in Asia between 1975 and 2004. Floods account for a very signifcant proportion of the disasters observed.
06 Dec 2010 - by Riccardo Pravettoni
Glacier cumulative mass balance
Compilation of available data (Fig. 1) shows that most mountain glaciers are losing mass, and that the overall rate of mass loss has increased in the last decade. For the last decade the highest mass loss per unit area h...
06 Dec 2010 - by Riccardo Pravettoni
Regional flood vulnerability
Since Asia comprises a large portion of the World’s popula- tion, and more than 40% of all the foods in the world occur in Asia, a large number of people are affected by disasters (Fig. 14). More than 40% of the peo...
06 Dec 2010 - by Riccardo Pravettoni
Seasonal patterns of precipitation and runoff
The infuence of glaciers on seasonal distribution of river fow is strongly dependent on annual temperature and precipitation cycles, and the proportion of the catchment occupied by glacier ice. Figure 4 compares precip...
06 Dec 2010 - by Riccardo Pravettoni
Qanat
A qanat is a water management system used to secure reliable water supply to human settlements or irrigation in semi-arid and arid regions. Probably originating in Persia, the qanat system has been adopted and developed ...
06 Dec 2010 - by Riccardo Pravettoni
Glacier recession and expansion in Hindu Kush-Himalayas and Central Asia
Averaged over their entire areas, within the period 1960– 2003 glaciers in Patagonia and Alaska have thinned by ap- proximately 35 m and 25 m, respectively, whereas high mountain glaciers in Asia have thinned by over...
06 Dec 2010 - by Riccardo Pravettoni
Victims and affected people in Pakistan flood, August 2010
Seasonal fooding can occur along all the major watersheds in the Himalayan region (Figure 11–14). The largest problems occur in food prone areas with high population densities. This includes parts of northeast India, ...
15 Feb 2010 - by Riccardo Pravettoni
Salzach river discharge, Austrian Alps
Simulated contributions of glacier melt (frn/ice melt) to annual total runoff were calculated between 1 and 4%. In the period 1999–2000, when the glacier mass balance of Goldbergkees and Stubacher Sonnblickkees have been...
06 Dec 2010 - by Riccardo Pravettoni
Glacier shrinkage in hypothetical river basins
Downstream variation in the impact of glacier recession is illustrated in Figure 5, which shows modelled river fows for idealized catchments under climates representative of the western and eastern Himalaya and a 0....
06 Dec 2010 - by Riccardo Pravettoni
Recent flood events in the Hindu Kush-Himalaya region
Since Asia comprises a large portion of the World’s popula- tion, and more than 40% of all the foods in the world occur in Asia, a large number of people are affected by disasters (Fig. 14). More than 40% of the peo...
03 Feb 2010 - by Riccardo Pravettoni